There is a common discussion about whether the effects of laser eye surgery “wear off” after a few years. If you had laser surgery for short-sightedness (including Femto-LASIK, SMILE) and now need glasses again, what are the main reasons? If you had laser surgery when you were young and later develop presbyopia or even cataracts as you age, can you have surgery again? What are your options? This article will explain to you.
Why Do I Need Glasses Again After Laser Eye Surgery?
Laser eye surgery works by using a laser to reshape the cornea. This change is permanent and helps fix refractive errors. The so-called “rebound” of short-sightedness may happen due to the following reasons:
1. Surgery Was Done When Your Prescription Was Not Stable Yet
A stable prescription is a must before any laser eye surgery. If you had surgery when your eyesight was still changing, your short-sightedness may return. For example:
- You were under 18, and your vision was still developing.
- You were pregnant or breastfeeding, and hormonal changes caused temporary vision changes.
2. Poor Eye Habits Leading to a Return of Short-Sightedness
Besides genetics, poor eye habits are a major risk factor for short-sightedness. Spending long hours focusing on close-up objects — like reading or looking at a computer or phone screen — can be a problem. If you return to these habits after laser surgery, your short-sightedness may increase again.
3. Regression (Related to Corneal Healing, Compensation, and Structural Changes)
Short-sighted glasses use concave lenses. Laser surgery removes a small lens-shaped piece of tissue from the cornea to correct short-sightedness.
However, our bodies naturally heal wounds. If you get a cut, the skin grows back. The cornea works the same way. After laser surgery, if the cornea “heals back” the tissue that was removed, your short-sightedness can return.
Think of it like getting an ear piercing. Some people find their piercing holes close up over time. It is the same healing process.
Other factors can also increase short-sightedness, such as thickening of the corneal surface cells or changes in the cornea’s structure [1]. This increase in short-sightedness due to healing, compensation, and structural changes is called “regression.”
Almost everyone experiences some degree of regression. It varies from person to person. Sometimes the change is so small you do not notice it. The higher your short-sightedness before surgery, the higher the chance and amount of regression. Also, different people heal differently. Two people with the same prescription before surgery may have different outcomes — one may have 75 degrees of regression, while the other has none.
4. Natural Development of Presbyopia or Cataracts
Laser surgery reshapes the cornea to fix refractive errors. It cannot stop presbyopia or cataracts from developing. Presbyopia happens when the eye’s natural lens becomes less flexible. Cataracts happen when the natural lens becomes cloudy. When presbyopia or cataracts start to affect your vision, you may need glasses again — even if you had laser surgery before.
Need Glasses Again After Laser Eye Surgery, What solutions should I consider?
1. Non-Surgical Solutions: Wearing Appropriate Glasses or Contact Lenses
If you find yourself needing vision correction again after laser surgery, you can wear prescription glasses or contact lenses as needed to resolve your visual difficulties.
Surgical Solutions (For those wishing to reduce or eliminate dependency on glasses)
For individuals who hope to lower or even eliminate their reliance on glasses or contact lenses, Intraocular Lens (IOL) Exchange is a viable option. Different types of IOLs are available to meet specific needs and resolve vision issues.
- Monofocal Lenses: Monofocal lens exchange provides clear vision at a single distance (usually far distance). You will not need glasses for long-range activities such as driving, watching TV, or outdoor sports. However, you will still require reading glasses for mid-range and near-distance tasks, such as using a computer or reading.
- Trifocal Lenses: Trifocal lenses provide vision at three distinct distances: near (e.g., using a phone), intermediate (e.g., computer work), and far (e.g., driving). This is a worthwhile consideration for those who prefer not to wear glasses in daily life. Note that there may be an initial adaptation period for glare issues following surgery.
- Light Adjustable Lens (LAL): For individuals who have previously undergone laser surgery, have complex corneal conditions, or whose IOL power was difficult to measure accurately before surgery, the LAL is an excellent choice. Unlike other IOLs that rely on pre-operative estimates, the LAL can be adjusted several weeks after surgery based on how the eye heals and how the lens settles.
Conclusion: Don't be discouraged; multiple options can restore your clear vision.
Having undergone laser surgery in the past does not guarantee a lifetime without glasses. It is common for vision needs to change due to aging, lifestyle habits, or corneal shifts. The key steps are:
- Identify the cause: Determine if the change is due to refractive regression, presbyopia (aging eyes), or cataracts.
- Professional Evaluation: Work with a specialist to assess your eye health, lifestyle requirements, and post-operative expectations to determine the most suitable surgical path.
Disclaimer: All surgical procedures carry unique advantages, disadvantages, and risks. Please consult an eye care professional for detailed information and to determine the best solution for your specific condition.